Home / 1,438,312.91-1,984,919.48-784,974.69

Finding the Fourth Proportional to 1,438,312.91, 1,984,919.48 and 784,974.69

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Solution

The fourth proportional to 1,438,312.91, 1,984,919.48 and 784,974.69 is: 1,083,291.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,438,312.91 : 1,984,919.48 = 784,974.69 : x
  2. Step 2: Convert to fraction form
    1,438,312.91/1,984,919.48 = 784,974.69/x
  3. Step 3: Cross multiply
    1,438,312.91x = 1,984,919.48 × 784,974.69
  4. Step 4: Simplify right side
    1,438,312.91x = 1,558,111,549,563.09
  5. Step 5: Solve for x
    x = 1,558,111,549,563.09/1,438,312.91
  6. Step 6: Final answer
    x = 1,083,291.09

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.